package com.example.lotterysystem.common.utils;

import cn.hutool.captcha.LineCaptcha;
import cn.hutool.captcha.generator.RandomGenerator;

public class CaptchaUtil {

    /**
     * 生成 length 位验证码
     * @param length
     * @return
     */
    public static String createCaptchaCode(int length) {
        RandomGenerator randomGenerator =  new RandomGenerator("0123456789", length);
        LineCaptcha lineCaptcha = cn.hutool.captcha.CaptchaUtil.createLineCaptcha(200, 100);
        lineCaptcha.setGenerator(randomGenerator);
        // 重新生成 code
        lineCaptcha.createCode();
        return lineCaptcha.getCode();
    }
}
